Wolf, Greenfield & Sacks, P.C. at a Glance


  • “Flexibility”
  • “Great people”
  • “Type and diversity of work”


  • “Workflow is sporadic”
  • “Hours can sometimes be rough”
  • “Billable pressure”

About Wolf, Greenfield & Sacks, P.C.

Founded in 1927, Boston's Wolf, Greenfield & Sacks, P.C. has grown to be one of the preeminent intellectual property firms in the Northeast, and has been a fundamental part of some of the most important IP decisions in history.

A History of IP Expertise

From its beginning, when patent attorney Ezekiel Wolf opened up shop in Prohibition-era Boston, Wolf Greenfield has attracted notable clients. In its first decades, clients included famed electrical engineer Andrew Alford and radio pioneer Reginald Fessenden. Now, Nobel Prize winners, Fortune 500 companies, high-tech startups, and major research universities rely on the firm to protect and enforce their IP rights.

Wolf Greenfield's reputation in IP law carries historical weight. In 1961, the firm successfully argued Aro Manufacturing Co. v. Convertible Top, now known as the seminal Supreme Court case covering the doctrine of permissible repair. A few decades later, in the much different technological era of 1998, the firm's lawyers crafted the winning argument in the landmark State Street case, which set the stage for software patents and the patentability of business methods. More recently, the firm won the second longest patent interference proceeding in USPTO history and the largest jury verdict in a trade secret case in Massachusetts history.

The firm represents clients large and small in patent litigation in district courts around the country and on appeal before the Federal Circuit. In addition, the firm's lawyers are frequently called upon to represent technology companies in high stakes patent litigation before the International Trade Commission, where Wolf Greenfield has an outstanding track record of success. The firm has achieved successes such as summary judgment of patent invalidity in the Eastern District of Texas (known as a difficult district in which to secure such summary judgments) and groundbreaking rulings on novel issues such as the proper claim construction for mouse nomenclature in patent claims covering transgenic mice. The firm also has a long and successful history in post-grant matters before the Patent Office, and is regularly engaged by clients when the stakes are high.

Grooming Specialists

Wolf Greenfield attorneys have more than just legal training. Many are also engineers and scientists, backgrounds necessary to negotiate the complicated underpinnings of their clients' inventions or products, which range from a client who invented a new method of DNA sequencing to another who dreamed up a new water purification system. Because technical knowledge is often a job requirement, in 1988, the firm pioneered the first technology specialist program in Boston. Under this program, the firm hires those with advanced science or engineering degrees to work at the firm by day and attend law school at night. The goal is that upon law school graduation, a well-trained IP attorney will be born.


August 2017
Wolfies are the "Best"

Twelve Wolf Greenfield attorneys were selected by their peers for inclusion in The Best Lawyers in America© 2018. Wolf Greenfield attorneys featured in the annual rankings include: Michael Albert (Chair, Litigation Group); Neil Ferraro (Chair, Mechanical Technologies Group); Ed Gates (firm Chairman); Rich Giunta (Chair, Post-Grant Proceedings Group); Pat Granahan (Shareholder, Biotechnology Group); Helen Lockhart (Shareholder, Biotechnology Group); Tim Oyer (President and Managing Partner); Mike Rader (Shareholder, Litigation Group); Nathan Speed (Shareholder, Litigation Group); Maryanne Trevisan (Shareholder, Biotechnology Group); Ed Walsh (Shareholder, Electrical & Computer Technologies Group); Doug Wolf (Chair, Trademark & Copyright Group).

Celebrating 90 Years of IP Law

This landmark occasion commemorates the firm's long history of providing top-quality service to innovators across technologies whose intellectual property is at the core of their business. "We are proud to have reached this significant milestone," said Tim Oyer, Wolf Greenfield's president and managing partner. "While we've grown to become one of the largest IP firms in the country, we have done so carefully and methodically, and stayed true to our exclusive mission of understanding clients' business objectives, then strategically building, protecting and enforcing their IP globally, consistent with those objectives. We believe Ezekiel Wolf would be pleased."

July 2017
Raising the Bar…and the Money

Wolf Greenfield raised $67,000 to support the work of Greater Boston Legal Services (GBLS) on behalf of domestic violence survivors. The drive benefits the GBLS Family Law Unit, which offers free legal services to help families overcome difficult circumstances, to move on with their lives and to become self-sufficient. Every Boston-based associate, counsel and technology specialist at the firm contributed, with the firm's shareholder group providing matching funds. For the fifth year in a row, Wolf Greenfield raised more than any of the nearly 50 other participating law firms, earning it the GBLS Jack Ward Cup.

January 2017
Another "First" for Wolf Greenfield's Post-Grant Group

On January 25, 2017, the Patent Trial and Appeal Board (PTAB) dismissed three inter partes review (IPR) petitions filed against Wolf Greenfield client the University of Florida Research Foundation (UFRF). The PTAB found that UFRF is an arm of the state of Florida entitled to sovereign immunity and therefore cannot be subject to IPRs involuntarily. The PTAB's decision is a significant one for UFRF, and could protect other state universities and related entities from IPRs. Law360 called the decision "a win for state universities."

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Wolf, Greenfield & Sacks, P.C.

600 Atlantic Avenue
Boston, MA 02210-2206
Phone: (617) 646-8000


  • Employer Type: Private
  • President and Managing Partner: Timothy Oyer
  • Recruiting Chair: John Van Amsterdam
  • Total No. Attorneys 2018: 95

  • Base Salary
    1st year: $190,000

  • Summer Associate Offers
    2 out of 2 (2Ls) (2016) 3 out of 3 (2Ls) (2017)

  • Major Departments & Practices

    Biotechnology • Chemical & Materials Technologies • Electrical & Computer Technologies • Litigation • Mechanical Technologies • Patent • Pharmaceutical • Post Grant Proceedings • Trademark & Copyright • Transactions


Major Office Locations

  • Boston, MA • New York, NY